 Three years is approximately the time frame in which events switch from being displaced backward in time to forward in time, with events occurring three years in the past being equally likely to be reported with forward telescoping bias as with backward telescoping bias.Although telescoping occurs in both the forward and backward directions, in general the effect is to increase the number of events reported too recently.This net effect in the forward direction is because of forces that impair memory, such as lack of salience, also impair time perception.